title: [Retroperitoneal tumors].
mesh_terms: D000005:Abdomen; D000008:Abdominal Neoplasms; D005350:Fibroma; D006801:Humans; D009369:Neoplasms; D012186:Retroperitoneal Neoplasms
keywords: ABDOMEN/neoplasms; FIBROMA
vernacular_title: Contributo anatomo-clinico allo studio dei tumori retroperitoneali.